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TDC-GP30-F01 Ultrasonic Flow Converter

Firmware supported intelligent ultrasonic flow converter


  • High performance and ultra-low power 32-bit CPU
  • Advanced high-precision analog part
  • Transducers can be connected directly to GP30, no external components required
  • Firmware for calculation of flow, volume and temperature, including linearization and two-point calibration
  • Firmware adopts automatically to zero flow (2Hz) or flow (8Hz) condition
  • Error handling, bubble detection


  • Lowest power solution for ultrasonic water meters
  • On-chip firmware allows fastest time-to-market
  • Best measurement performance for leakage detection

Product parameters

Analog Frontend Yes
First Wave Detection Yes
Amplitude Measurement Yes
Number of Hits 31
Resolution [ps] 11
Operating Supply Range 2.5 to 3.6
Interface SPI, UART, Pulse
CPU 32-bit
Firmware Volume, flow, and temperature calculation
Memory 4k NVRAM, 4k ROM
Ambient Temperature Range [°C] -40 to +125
Package QFN32, QFN40

General Description

TDC-GP30-F01 is a complete ultrasonic flow metering solution, including the flow calculation. It drastically simplifies the design of ultrasonic heat and water meters and is the necessary step for compact energy-saving ultrasonic water meters. The ultra-low current capabilities allow the use of standard 2/3 AA or AA lithium thionyl chloride batteries at 6-8 Hz measuring frequency even in the water meter version. The TDC-GP30-F01 firmware does the linearization and temperature compensation based on spool piece specific calibration data and completes the system-on-chip approach.

This product suits for the following applications:

  • Non-invasive cold water meter


Title Category Headline Buy
TDC-GP30DemoKit Application Board Development Kit for TDC-GP30
TDC-GP30EvalKit Application Board Evaluation Kit for TDC-GP30, QFN40 package

Technical Documents

Type Description Language
Application Note Toggling GPIO pin of GP30-F01 using open firmware section and ASM Source Code English
Application Note Toggling GPIO pin of GP30-F01 using open firmware section English
Application Note Vol. 3 User Manual English
Application Note TDC-GP30 UART Communication English
User Guide Vol.5 User Guide of Calibration Engine English

Environmental Documents

Type Description Language
Material Declaration Form MDF_502030007_TDC-GP30YA-F01 English
Material Declaration Form MDF_502030005_TDC-GP30YD-F01 English


Type Description Language
Product Change Notification Change Notification_MOQ Amendment_PCAPx_TDC-GPx_PS09FN (issued 2017-Mar) English

Other Information

Type Description Language
Block Diagram TDC-GP30 Block Diagram English
Factsheet Building Static Water Meters of High Quality English

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